✅ Add test for error handling

spec/project-spec.coffee

@@ -539,7 +539,13 @@ describe "Project", ->
       expect(atom.project.contains(randomPath)).toBe false
 
   describe ".getEnv", ->
+    [originalTerm] = []
+
+    beforeEach ->
+      originalTerm = process.env.TERM
+
     afterEach ->
+      process.env.TERM = originalTerm
       delete atom.project.env
 
     it "returns a copy of the environment", ->
@@ -554,15 +560,17 @@ describe "Project", ->
         spyOn(process, "platform").andReturn("foo")
 
       describe "when TERM is not set", ->
-        it "returns the PATH unchanged", ->
-          spyOn(process.env, "TERM").andReturn(undefined)
+        beforeEach ->
+          delete process.env.TERM
 
+        it "returns the PATH unchanged", ->
           expect(atom.project.getEnv().PATH).toEqual process.env.PATH
 
       describe "when TERM is set", ->
-        it "returns the PATH unchanged", ->
-          spyOn(process.env, "TERM").andReturn("foo")
+        beforeEach ->
+          process.env.TERM = "foo"
 
+        it "returns the PATH unchanged", ->
           expect(atom.project.getEnv().PATH).toEqual process.env.PATH
 
     describe "on OS X", ->
@@ -570,12 +578,10 @@ describe "Project", ->
         spyOn(process, "platform").andReturn("darwin")
 
       describe "when TERM is not set", ->
+        beforeEach ->
+          delete process.env.TERM
+
         it "replaces the PATH with the one obtained from the shell", ->
-          env = _.clone(process.env)
-          delete env.TERM
-
-          spyOn(process, "env").andReturn(env)
-
           spyOn(atom.project, "getShellEnv").andReturn """
             FOO=BAR
             TERM=xterm-something
@@ -584,9 +590,18 @@ describe "Project", ->
 
           expect(atom.project.getShellPath()).toEqual "/usr/bin:/bin:/usr/sbin:/sbin:/some/crazy/path/entry/that/should/not/exist"
           expect(atom.project.getEnv().PATH).toEqual "/usr/bin:/bin:/usr/sbin:/sbin:/some/crazy/path/entry/that/should/not/exist"
+          expect(atom.project.getEnv().FOO).not.toEqual "BAR"
+
+        it "does the best it can when there is an error retrieving the shell environment", ->
+          spyOn(atom.project, "getShellEnv").andReturn(undefined)
+
+          expect(atom.project.getShellPath()).toBeUndefined()
+          expect(atom.project.getEnv().PATH).not.toBeUndefined()
+          expect(atom.project.getEnv().PATH).toEqual process.env.PATH
 
       describe "when TERM is set", ->
-        it "returns the PATH unchanged", ->
-          spyOn(process.env, "TERM").andReturn("foo")
+        beforeEach ->
+          process.env.TERM = "foo"
 
+        it "returns the PATH unchanged", ->
           expect(atom.project.getEnv().PATH).toEqual process.env.PATH

src/project.coffee

@@ -288,7 +288,8 @@ class Project extends Model
     unless @env?
       @env = _.clone(process.env)
       if process.platform is "darwin" and not process.env.TERM?
-        @env.PATH = @getShellPath()
+        shellPath = @getShellPath()
+        @env.PATH = shellPath if shellPath?
 
     _.clone(@env)
 
@@ -296,8 +297,13 @@ class Project extends Model
   Section: Private
   ###
 
+  # Gets the user's configured shell `PATH`.
+  #
+  # Returns the value of `PATH` or `undefined` if there was an error.
   getShellPath: ->
     shellEnvText = @getShellEnv()
+    return unless shellEnvText?
+
     env = {}
 
     for line in shellEnvText.split(os.EOL)
@@ -312,9 +318,18 @@ class Project extends Model
 
     env.PATH
 
+  # Gets a dump of the user's configured shell environment.
+  #
+  # Returns the output of the `env` command or `undefined` if there was an error.
   getShellEnv: ->
     shell = process.env.SHELL ? "/bin/bash"
-    results = child_process.spawnSync shell, ["--login", "--interactive"], input: "env", encoding: "utf8"
+
+    # The `-ilc` set of options was tested to work with the OS X v10.11
+    # default-installed versions of bash, zsh, sh, and ksh. It *does not*
+    # work with csh or tcsh. Given that bash and zsh should cover the
+    # vast majority of users and it gracefully falls back to prior behavior,
+    # this should be safe.
+    results = child_process.spawnSync shell, ["-ilc"], input: "env", encoding: "utf8"
     return if results.error?
     return unless results.stdout and results.stdout.length > 0